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Here is an example of an $\alpha$-halogenation reaction of acetophenone.
Created for Albert.io. Copyright 2016. All rights reserved.
Which of the following statements is NOT true about the $\alpha$-halogenation of carbonyl compounds?
$\alpha$ halogenation reaction occurs in basic conditions only.
The reaction cannot be stopped at the mono-halogenated state and further undergoes halogenation to give polyhalogenated products.
The reaction intermediate is a very reactive enolate.
Polyhalogenation of a methyl ketone (RCO-$CH_3$) is a typical laboratory method to identify the presence of methyl ketone in a given compound, and the reaction is known as a 'Haloform reaction'.